Classical Scores Library (Proquest) This link opens in a new windowMusic Online: Classical Scores Library is a series of four volumes with a mission to provide a reliable and authoritative source for scores of the classical canon, as well as a resource for the discovery of lesser-known contemporary works. The collections encompass all major classical musical genres and time periods from the Middle Ages to the 21st century. With full, study, piano, and vocal scores, this comprehensive collection will enhance the study of music history, performance, composition and theory for a variety of scholars.